Place bacon strips on a folded paper towel on a microwave-safe plate, then cover with another folded paper towel. Microwave for 1 minute, then rotate the plate 1/4 turn and microwave for 30 more seconds. Continue rotating and cooking in 30-second increments until the bacon is crisp, then let cool and chop.

In a very large bowl, add chopped bacon, romaine lettuce, pear, apple, peanuts, dried cranberries, and feta cheese. Add salad dressing and balsamic vinegar to taste, then toss to coat and serve.